Locally, a friend of mine that lives way out on the west side, had bought some bulk grains and had them stored in a spare bedroom. He went in and found there were black bugs all over the floor. He sprayed and thought that was the end of the problem. It wasn't. Instead it got worse. It got much worse...In the end, he had to toss all of his bulk grain and had an exterminator come in and zap the critters...Before they spread any further into the rest of the house, than they already had...I figured they were "imported" in with the bags of grain?...Not sure as I was not there and didn't get to see the actual problem/s....Now IF he had put the bulk into plastic buckets and sealed or used the oxygen absorbers, or vacuum packed the grains, would that have stopped the problem..? I am still not sure what they were....some form of a black beetle, less than 1/2 inch long...ANYONE got anything on this? Ever had this problem?If so, what the heck are they, and where did they come from? Then, the most important question is: Can any of the grain be salvaged, screened, or is it a total loss? How can the BUGS be identified and removed?